It may take a while to transition from the BUILD to the ACTIVE state, as reported by 'nova list'. If 'nova list' reports FAILED in the Status field, it might help to restart the nova scheduler with 'sudo systemctl restart openstack-nova-scheduler.service' and try again.

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It may take a while to transition from the BUILD to the ACTIVE state, as reported by 'nova list'.

If the instance goes into the ERROR state, then check the nova-compute logs for errors:

If the instance goes into the ERROR state, then check the nova-compute logs for errors:

$> grep ERROR /var/log/nova/compute.log

$> grep ERROR /var/log/nova/compute.log

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What might help is restart the nova scheduler with 'sudo systemctl restart openstack-nova-scheduler.service' and try again in case that the scheduler reprts an error in the logs.